A sensitivity study of separation distances calculated with the Austrian Odour Dispersion Model (AODM)

作者：Piringer Martin^*; Petz Erwin; Groehn Inga; Schauberger Guenther

来源：Atmospheric Environment, 2007, 41(8): 1725-1735.

DOI：10.1016/j.atmosenv.2006.10.028

• odour
• stability class
• peak-to-mean ratio
• separation distance
• Gauss model

The Austrian Odour Dispersion Model (AODM) is a Gaussian model adapted for the prediction of odour sensation. It estimates the daily and seasonal variation of the odour emission, the average, ambient odour concentration and the momentary (peak) concentration for the time-interval of a single human breath (approx. 5 s). Peak concentrations, further downwind, are modified by use of an exponential attenuation function for which the ratios of the standard deviations of the wind components to the average wind speed have either to be taken from the literature or to be calculated, e.g. from ultrasonic anemometer data.
AODM calculates direction-depenclent separation distances for a combination of odour threshold and exceedence probability, which are a function of the prevailing wind velocity and atmospheric stability conditions. Meteorological time series from one site in Styria in southern Austria and one site in the Austrian flatlands, North of the Alps, both rural, are used for a sensitivity study of separation distances. One aspect is, how two different schemes to determine atmospheric stability influence the separation distances. Another source of uncertainty of the calculated separation distances results from the use of measured or literature values for the ratios mentioned above. Decisions on which schemes or ratios to be Used have a decisive influence on the separation distances.

• 出版日期2007-3
• 单位河北医科大学